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"i duced tant latrntlihti JOSEPH H. LITTLEFIELD, OF CAMBRIDGE, vMASSAOHUSETTS.

Letters Patent No. 85,530, dated January 5, 1869. v

COMBINED PRESS .AND STRAINER.

y'.llie Schedule referred to in these Letters Patent and making part of the-same.

To all 'whom it ma/y concern:

Beit known that I, JOSEPH H. Lirrrlnrrnnn, of

Cambridge, in the State of Massachusetts; have invented certain new and useful Improvements in the 'Combined Press and Strainer; and I do hereby declare Figure 3 is avertical central section of the plain yfollower.

The same part is marked by the same letter wherever my improvements, I will -proceed to describe their construction and operation. g

In the drawings- Y A is a stand or frame, having arms, B B, intended to span a pot, pan, or other suitable vessel, and a grating, a a, upon which the strainer-plate K is supported.

Thecircular rim of the frame A has a flange, b, which receives the lower edge of the cylinder C, which forms the side of the chamber of the press.-

On the outside of the cylinder are attached two standards, D D', the upper ends of which have recesses,which receive the ends of theyoke E, through the middle of which the screw G works.

These recesses are placed, as seen in g. 2, on opposite sides ofthe standards D D', respectively, so that when, the yoke E is rotated in one direction, its ends will be forced into the recesses, and when rotated in the opposite direction, they will be disengaged from the recesses, and leave the yoke and the parts attached to it free to be removed from the apparatus.

The central portion of the yoke E forms a nut, c, through which the screw G works'.

On the upper end of screw G is a winch, H, by which it is turned.

Its lower end is received by a threaded socket, f, in the centre of follower F. As soon as the screw G is driven to the bottom of this socket. the follower' F must begin -to turn with the screw, and continue to rotate as long as the screw is driven inthe same direction.

The follower F is a circular plate, fitting the interior ,of cylinder O.

' Its lower'surfacc is covered with bosses, c, and on its upper surface are ribs, d, to give it streng-th.

When the follower is rotated, the bosses, coming in contact with the material in the vessel O, produce 'a grinding andtearing effect, which assists their rapid disintegration.

When it is not desired to produce this eifect, but to limit the operation to simple compression, I make use of a plain follower, F', iig. 3, with no bosses on its lower4 surface, and with a plain socket, g, whose bore is large enough to allow the screw G to turn in it without en gaging, and without rotating the follower F'.

On the bottom of the vessel C, and supported by the cross-bars of the frame' A, is placed a strainer, K, made of wire gauze, or perforated metal, Athe size of the meshes or peribrations being graduated according to the character of the work to be done.

The operation is obvious ii'om the construction.

The advantages of this construction are, greater convenience in applying the pressure, holding all that is gained, the facility of removing the follower, and the addition ofthe grinding or disintegrating-action to that l of mere compression.

l have contemplated several modes of operating the follower; for instance, the screw G may be attached, by its lower end, to the centre ofthe frame A, and stand in the middle of the chamber G, the follower forming a uut, and being screwed up and down upon it; orA a wire may be attached spirally around the outside of the vessel O, and engage with hooks in the lower.,ends of arms, united above by a cross-piece, to which the shaft of the follower is attached.

Though I have conceived' these devices, I deem the construction I have described the best.4

Having thus fully described my invention,

What I claim, and desire to secure by Letters Patent, in a combined press and strainer, is-

1. The combinatioii and arrangement-of the stand ards D, yoke E, screw G, and Vfollowers F or F', all

vconstructed in thc manner and for the purpose described.

2. The embossed follower F, 'constructed and operated as described.

Y The above specification of my said invention signed and witnessed at Boston, this 26th day of A ugust, A. D. 1868 Witnesses; JOSEPH H. LITTLE/FIELD.

SYDNEY E.- SMITH, C-HAS F. STANsBURY. 

